Marine Weather and TidesAltoona, WA

Version 3.4

What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 7:12AM

Sunset 7:25PM

Monday March 19, 2018 8:41 PM PDT (03:41 UTC)

Moonrise 7:44AM

Moonset 9:02PM

Illumination 11%

NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

PZZ210 Columbia River Bar- 212 Pm Pdt Mon Mar 19 2018 In the main channel..Combined seas 2 to 4 ft through Tuesday. However, seas will temporarily build to 5 ft during the ebb around 7 pm Monday, to 6 ft during the strong ebb around 715 am Tuesday, and to 5 ft during the ebb around 730 pm Tuesday.

PZZ200 212 Pm Pdt Mon Mar 19 2018 Synopsis for southern washington and northern oregon coast.. A weak low pressure over the northeast pacific will gradually weaken as it shifts southwestward today. A more active weather pattern will impact the waters during the latter half of the week.

Synopsis Rather quiet weather with morning clouds and fog I nthe
valleys continues through Tue under weak high pres. Wed and wed
night low pres off the ca coast will spread moisture north over the
region as a cold front from the NW pushes through bringing rain, and
then a cool showery air mass for the end of the week.

Short term Tonight through Thursday... The weak upper low off the
oregon coast near 43n 129w is expected to swing inland across
central and southern oregon late tonight into tue. This returns a
chance for some showers to the far southern part of the forecast
area, mainly the lane county cascades tonight and tue. To the north,
the area will remain under a weak surface high pres, with light
winds favorable for radiational fog to develop again in the valleys
late tonight and continuing through Tue morning.

Tue night and Wed models indicate some moisture creeps up again from
the south as the closed low well off the ca coast begins to open up.

This spread chances for rain northward, and by late Wed deeper
moisture arrives bringing the prospects for more substantial rain.

As the deeper moisture spreads up from the south, warmer air
associated with it likely raises snow levels above the passes wed
night. The warmer air will be short-lived though, as a cold front
ahead of a deep trough of low pres from the gulf of alaska pushes in
wed night, adding additional lift for a wet night.

Long term Thursday night through Sunday... Models in good
agreement moving an upper low, with origins in the gulf of alaska,
down the bc coast Thu night and fri, then inland across the region

sat. This brings a showery and quite cool air mass across the
region. Thickness values down into the range of 522 to 525 dm fri
and Sat morning suggest snow levels well down into the coast range
and cascade foothills, with maybe some flakes seen in the higher
hills of the low elevation valley zones. Sun the upper trough is
expected to move east with weak ridging following. A weak short wave
is hinted at Mon in both the GFS and ec, so will need to hang on to
some low pops Sun and mon, with temps warming a bit, but still
likely cooler than seasonal normals.

Aviation Almost exclusivelyVFR this afternoon should last
into the early overnight hours. The small area of ifr left over
this afternoon will clear within the next hour. However, ifr and
lifr flight restrictions should return to at least inland taf
sites towards 12z Tuesday. If lifr conditions do develop, they will
likely not clear until early afternoon again Tuesday. Light
offshore flow may keep the coastVFR but any calm winds would
allow development of ifr or lifr conditions.

Kpdx and approaches...VFR through this evening and into tonight.

Then clear skies and light winds will likely to ifr or lifr flight
restrictions developing after about 12z Tuesday, similar to this
morning. Bowen

Marine Expect winds to generally remain less than 20 kt
through midweek, but could see some gusts to around 20 kt
tomorrow evening as high pressure to the NW and low pressure to
the SW squeeze the local pressure gradient just a bit. Models
continue to show a more active weather pattern returning Thursday
and continuing through the weekend. Small craft advisory level
wind gusts of 25 to 30 kt and seas climbing above 10 ft appear
most likely during this time. Bowen

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... None.

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Weather Reporting Stations

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Weather Map and Satellite Images

(on/off) &nbspHelpWeather MapGOES Local Image of PacificNorthwestEDITNOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.Link to LoopOther links:
Northern PacificContential USFull GOES-East

Wind Forecast for Portland, OR (23,6,7,8)

Disclaimer:The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.